<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/下载.png" alt="">
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px' ">
        <div class="toggle-buttor" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath">
          <!-- 一级菜单区域 -->
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <!-- 一级菜单区域模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
           <el-menu-item :index=" '/'+ subItem.path + '' " 
              v-for="subItem in item.children" 
              :key="subItem.id"
              @click="saveNavState('/'+ subItem.path + '' )">
             <!-- 二级菜单模板区域 -->
             <template slot="title">
              <!-- 图标 -->
              <i class="el-icon-menu"></i>
              <!-- 文本 -->
              <span>{{subItem.authName}}</span>
            </template>
           </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-container>
        <!-- 右侧内容主题 -->
        <el-main>
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menuList: [],
      iconsObj: {
        "125": 'iconfont icon-user',
        "103": 'iconfont icon-tijikongjian',
        "101": 'iconfont icon-shangpin',
        "102": 'iconfont icon-danju',
        "145": 'iconfont icon-baobiao',
      },
      isCollapse: false,
      // 被激活的连接地址
      activePath: ''
    }
  },
  created(){
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
      const {data: res} = await this.$http.get("menus")
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  },
}
</script>
<style lang="less" scope>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    > span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
   .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

// 图标
.iconfont {
  margin-right: 10px;
}

.toggle-buttor {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>